2016New Upgraded Backlight Rechargeable 300-350yd Remote Dog Training Collar with Beep ,Vibrate and Shock Electronic Collar for 1 Dog Highly Waterproof Receiver: Great for indoor or outdoor behavioral and obedience training, field trip, hunting. Your dog can wear it without worrying about water or rain or ice,It evey can swim. Rechargeable for Both The Remote and Receiver- No need to buy battery again! Rechargeable Lithium batteries! Supplied charger allows you to charge both the remote and the collar at any time Powerful and Energy Saving - 500 Yards Without Any Disturbance,Both The Remote Transmitter And Receiver Are Energy-Saving Designed, The Remote Will Go Into Stand-By Mode If There Is No Operation After 1 Minute And Any Function Button Will Activate It. The Receiver is 4 Minutes And Any Movement Will Activate It. Adjustable for Vibration and Shock- 100 Frequencies Of Vibration And 100 Intensities Of Shock Optional, For Different Situation Of Your Pet, Different Option Comes Different Results. So Easy To Operate - Separate buttons on the small wireless remote control for tone, vibration, shock, collar switch and strength up/down, it is so easy to operate it with one hand and avoid the misoperation